:root {
    --primary: #0F4C81;
    --primary-dark: #0A3561;
    --primary-light: #2E86DE;
    --primary-bg: #EBF4FF;
    --primary-glow: rgba(46, 134, 222, 0.15);
    --secondary: #5A6F86;
    --accent: #0EA5A0;
    --accent-light: #14D4CE;
    --accent-bg: #E6FAF9;
    --success: #0D9F6E;
    --success-bg: #D1FAE5;
    --warning: #E8890C;
    --warning-bg: #FFF3E0;
    --danger: #DC2626;
    --danger-bg: #FEF2F2;
    --info: #2E86DE;
    --info-bg: #E8F2FE;
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --border-radius: 14px;
    --border-radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(15,23,42,0.04), 0 1px 2px rgba(15,23,42,0.03);
    --shadow: 0 2px 8px rgba(15,23,42,0.06), 0 1px 3px rgba(15,23,42,0.04);
    --shadow-md: 0 4px 16px rgba(15,23,42,0.08), 0 2px 6px rgba(15,23,42,0.04);
    --shadow-lg: 0 12px 40px rgba(15,23,42,0.12), 0 4px 12px rgba(15,23,42,0.06);
    --shadow-xl: 0 20px 60px rgba(15,23,42,0.15), 0 8px 20px rgba(15,23,42,0.08);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-width: 264px;
    --nav-height: 62px;
    --gradient-primary: linear-gradient(135deg, #0F4C81 0%, #1565A8 100%);
    --gradient-accent: linear-gradient(135deg, #0EA5A0 0%, #14D4CE 100%);
    --gradient-surface: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gradient-surface);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226,232,240,0.8);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-icon {
    font-size: 1.75rem;
}

.nav-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.nav-subtitle {
    font-size: 0.7rem;
    color: var(--gray-400);
    display: block;
    line-height: 1.2;
    letter-spacing: 0.01em;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.unit-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.unit-label {
    font-size: 0.8rem;
    color: var(--gray-400);
    font-weight: 500;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1.1rem;
    border: 1px solid transparent;
    border-radius: var(--border-radius-sm);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0A3561 0%, #0F4C81 100%);
    box-shadow: 0 4px 16px rgba(15,76,129,0.3);
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

.btn-danger:hover {
    background: #B91C1C;
    box-shadow: 0 4px 16px rgba(220,38,38,0.3);
}

.btn-outline {
    background: var(--white);
    border-color: var(--gray-200);
    color: var(--gray-600);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

.btn-sm {
    padding: 0.35rem 0.85rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

.btn-lg {
    padding: 0.8rem 1.75rem;
    font-size: 1rem;
    border-radius: 10px;
}

.btn-block {
    width: 100%;
    margin-top: 1.5rem;
}

.emergency-btn {
    animation: pulse-danger 2s infinite;
    font-weight: 700;
    letter-spacing: 0.02em;
}

@keyframes pulse-danger {
    0%, 100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(220, 38, 38, 0); }
}

.emergency-panel {
    position: fixed;
    top: var(--nav-height);
    right: 0;
    width: 420px;
    max-width: 90vw;
    height: calc(100vh - var(--nav-height));
    background: var(--white);
    box-shadow: var(--shadow-xl);
    z-index: 99;
    overflow-y: auto;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.emergency-panel.hidden {
    transform: translateX(100%);
}

.emergency-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
    color: var(--white);
    position: sticky;
    top: 0;
}

.emergency-header h3 {
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}

.btn-close {
    background: rgba(255,255,255,0.15);
    border: none;
    color: var(--white);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    line-height: 1;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.btn-close:hover {
    background: rgba(255,255,255,0.25);
}

.emergency-body {
    padding: 1.5rem;
}

.emergency-section {
    margin-bottom: 1.5rem;
}

.emergency-section h4 {
    color: var(--danger);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    font-weight: 700;
}

.emergency-section ol,
.emergency-section ul {
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
}

.emergency-section li {
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--gray-700);
}

.med-card {
    background: var(--danger-bg);
    border-left: 3px solid var(--danger);
    padding: 0.75rem 1rem;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.app-layout {
    display: flex;
    margin-top: var(--nav-height);
    min-height: calc(100vh - var(--nav-height));
}

.sidebar {
    position: fixed;
    left: 0;
    top: var(--nav-height);
    width: var(--sidebar-width);
    height: calc(100vh - var(--nav-height));
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    z-index: 50;
}

.sidebar-header {
    padding: 1.5rem 1.25rem 0.5rem;
}

.sidebar-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-400);
}

.sidebar-nav {
    padding: 0.5rem 0.75rem;
    flex: 1;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1rem;
    color: var(--gray-500);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
    position: relative;
}

.nav-link:hover {
    background: var(--gray-50);
    color: var(--gray-800);
}

.nav-link.active {
    background: var(--primary-bg);
    color: var(--primary);
    font-weight: 600;
    box-shadow: inset 3px 0 0 var(--primary);
}

.nav-link-icon {
    font-size: 1.1rem;
    width: 1.5rem;
    text-align: center;
}

.progress-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gray-300);
    margin-left: auto;
    transition: var(--transition);
}

.progress-dot.completed {
    background: var(--success);
    box-shadow: 0 0 0 3px rgba(13, 159, 110, 0.2);
}

.sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--gray-100);
}

.sidebar-resources a {
    display: block;
    font-size: 0.8rem;
    color: var(--primary-light);
    text-decoration: none;
    padding: 0.3rem 0;
    transition: var(--transition-fast);
}

.sidebar-resources a:hover {
    color: var(--primary);
    text-decoration: underline;
}

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 2rem;
    max-width: 1000px;
}

.content-section {
    display: none;
    animation: fadeIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    margin-bottom: 2rem;
}

.section-header h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.3rem;
    letter-spacing: -0.03em;
}

.section-header p {
    color: var(--gray-400);
    font-size: 0.95rem;
}

.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow);
    border-color: var(--gray-300);
}

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--gray-100);
    background: var(--gray-50);
}

.card-header h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: -0.01em;
}

.card-body {
    padding: 1.25rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.form-grid-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.4rem;
}

.form-control {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--border-radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--gray-800);
    background: var(--white);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.form-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
}

textarea.form-control {
    resize: vertical;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-700);
    cursor: pointer;
    padding: 0.3rem 0;
    transition: var(--transition-fast);
}

.checkbox-label:hover {
    color: var(--gray-900);
}

.checkbox-label input[type="checkbox"],
.checkbox-label input[type="radio"] {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-700);
    cursor: pointer;
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.radio-label:hover {
    background: var(--gray-50);
    color: var(--gray-900);
}

.radio-label input[type="radio"] {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
}

.altitude-input-section {
    transition: var(--transition);
}

.altitude-input-section.hidden {
    display: none;
}

.search-input-group {
    display: flex;
    gap: 0.5rem;
}

.search-input-group .form-control {
    flex: 1;
}

.search-result {
    margin-top: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--success-bg);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--gray-700);
    border-left: 3px solid var(--success);
}

.search-result.error {
    background: var(--danger-bg);
    border-left-color: var(--danger);
}

.hidden {
    display: none !important;
}

.urgency-bar-container {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.urgency-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.urgency-text {
    font-weight: 700;
}

.urgency-bar {
    height: 8px;
    background: var(--gray-100);
    border-radius: 4px;
    overflow: hidden;
}

.urgency-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.5s ease;
    background: var(--success);
}

.symptom-category {
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-sm);
    margin-bottom: 0.75rem;
    overflow: hidden;
    transition: var(--transition);
}

.symptom-category:hover {
    border-color: var(--gray-300);
}

.category-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--gray-50);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--gray-700);
    transition: var(--transition-fast);
    user-select: none;
}

.category-title:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.category-arrow {
    font-size: 0.7rem;
    transition: transform 0.2s ease;
    color: var(--gray-400);
}

.category-title.collapsed .category-arrow {
    transform: rotate(-90deg);
}

.category-items {
    padding: 0.5rem 1rem 0.75rem;
    transition: var(--transition);
}

.category-title.collapsed + .category-items {
    display: none;
}

.results-section {
    margin-top: 2rem;
    animation: fadeIn 0.4s ease;
}

.result-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.result-card:hover {
    box-shadow: var(--shadow);
}

.result-card.emergency {
    border-color: var(--danger);
    border-width: 2px;
    background: var(--danger-bg);
}

.result-card.warning {
    border-left: 4px solid var(--warning);
}

.result-card.info {
    border-left: 4px solid var(--info);
}

.result-card.success {
    border-left: 4px solid var(--success);
}

.risk-gauge {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1rem;
}

.gauge-container {
    position: relative;
    width: 200px;
    height: 120px;
    margin-bottom: 1rem;
}

.gauge-bg {
    width: 200px;
    height: 100px;
    overflow: hidden;
}

.gauge-arc {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 20px solid;
    border-color: var(--success) var(--warning) var(--danger) var(--success);
    transform: rotate(-45deg);
}

.gauge-needle {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 4px;
    height: 90px;
    background: var(--gray-800);
    transform-origin: bottom center;
    border-radius: 2px;
    transition: transform 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    margin-left: -2px;
}

.gauge-center {
    position: absolute;
    bottom: -6px;
    left: 50%;
    width: 16px;
    height: 16px;
    background: var(--gray-800);
    border-radius: 50%;
    margin-left: -8px;
}

.gauge-label {
    font-size: 1.5rem;
    font-weight: 800;
    margin-top: 0.5rem;
    letter-spacing: -0.02em;
}

.gauge-label.low { color: var(--success); }
.gauge-label.moderate { color: var(--warning); }
.gauge-label.high { color: var(--danger); }

.gauge-score {
    font-size: 0.9rem;
    color: var(--gray-400);
    font-weight: 500;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.metric-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.metric-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.metric-label {
    font-size: 0.78rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
    font-weight: 500;
}

.factor-list {
    list-style: none;
    padding: 0;
}

.factor-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--gray-100);
    transition: var(--transition-fast);
}

.factor-item:last-child {
    border-bottom: none;
}

.factor-item:hover {
    background: var(--gray-50);
}

.factor-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.factor-dot.high { background: var(--danger); }
.factor-dot.moderate { background: var(--warning); }
.factor-dot.low { background: var(--success); }

.factor-text {
    font-size: 0.9rem;
    color: var(--gray-700);
    flex: 1;
}

.factor-points {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--gray-500);
    background: var(--gray-100);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
}

.recommendation-list {
    list-style: none;
    padding: 0;
}

.recommendation-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.6rem 0;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.recommendation-item::before {
    content: "\2713";
    color: var(--success);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.treatment-card {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    transition: var(--transition);
}

.treatment-card:hover {
    box-shadow: var(--shadow-sm);
}

.treatment-card.emergency-treatment {
    background: var(--danger-bg);
    border: 1px solid var(--danger);
}

.treatment-card.critical-treatment {
    background: #FFF7ED;
    border: 1px solid #F97316;
}

.treatment-card.high-treatment {
    background: var(--warning-bg);
    border: 1px solid var(--warning);
}

.treatment-card.medium-treatment {
    background: var(--info-bg);
    border: 1px solid var(--info);
}

.treatment-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.treatment-content h4 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    color: var(--gray-900);
    font-weight: 700;
}

.treatment-content p {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin: 0;
}

.treatment-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    margin-left: auto;
    flex-shrink: 0;
}

.badge-emergency { background: var(--danger); color: var(--white); }
.badge-critical { background: #F97316; color: var(--white); }
.badge-high { background: var(--warning); color: var(--gray-900); }
.badge-medium { background: var(--info); color: var(--white); }

.lake-louise-bar {
    margin: 1rem 0;
}

.ll-bar-track {
    height: 10px;
    background: var(--gray-100);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.ll-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.ll-bar-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.35rem;
    font-size: 0.72rem;
    color: var(--gray-400);
    font-weight: 500;
}

.spo2-panel {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: 10px;
    margin: 1rem 0;
}

.spo2-panel.normal { background: var(--success-bg); border-left: 4px solid var(--success); }
.spo2-panel.warning { background: var(--warning-bg); border-left: 4px solid var(--warning); }
.spo2-panel.danger { background: var(--danger-bg); border-left: 4px solid var(--danger); }

.spo2-value {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.spo2-details {
    font-size: 0.85rem;
    color: var(--gray-700);
}

.strategy-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.strategy-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--gray-300);
}

.strategy-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.strategy-card ul {
    list-style: none;
    padding: 0;
}

.strategy-card li {
    padding: 0.35rem 0;
    font-size: 0.9rem;
    color: var(--gray-700);
    padding-left: 1.25rem;
    position: relative;
}

.strategy-card li::before {
    content: "\2022";
    color: var(--accent);
    font-weight: 700;
    position: absolute;
    left: 0;
}

.medication-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.medication-card:hover {
    border-color: var(--gray-300);
    box-shadow: var(--shadow);
}

.medication-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    background: var(--gray-50);
    cursor: pointer;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--gray-800);
    transition: var(--transition-fast);
}

.medication-header:hover {
    background: var(--gray-100);
}

.medication-body {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--gray-100);
    display: none;
}

.medication-body.open {
    display: block;
}

.med-detail {
    display: flex;
    gap: 0.5rem;
    padding: 0.4rem 0;
    font-size: 0.875rem;
}

.med-detail-label {
    font-weight: 700;
    color: var(--gray-500);
    min-width: 100px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.med-detail-value {
    color: var(--gray-800);
}

.med-note {
    background: var(--info-bg);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--gray-700);
    margin-top: 0.5rem;
    border-left: 3px solid var(--info);
}

.plan-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.plan-table th {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.85rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: left;
}

.plan-table td {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

.plan-table tr:last-child td {
    border-bottom: none;
}

.plan-table tr:hover td {
    background: var(--gray-50);
}

.plan-table .action-ascent { color: var(--primary); font-weight: 700; }
.plan-table .action-rest { color: var(--success); font-weight: 700; }
.plan-table .action-stop { color: #F97316; font-weight: 700; }

.chart-container {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    height: 350px;
    box-shadow: var(--shadow-sm);
}

.download-btn {
    background: var(--white);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
}

.download-btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

.search-bar {
    margin-bottom: 1.5rem;
}

.search-bar .form-control {
    padding: 0.85rem 1.15rem;
    font-size: 1rem;
    border-radius: 12px;
    border: 1.5px solid var(--gray-200);
}

.search-bar .form-control:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.kb-content {
    margin-bottom: 2rem;
}

.kb-category {
    margin-bottom: 1.5rem;
}

.kb-category-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
    letter-spacing: -0.01em;
}

.kb-category-icon {
    font-size: 1.1rem;
}

.kb-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-sm);
    margin-bottom: 0.5rem;
    overflow: hidden;
    transition: var(--transition);
}

.kb-item:hover {
    box-shadow: var(--shadow);
    border-color: var(--gray-300);
}

.kb-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--gray-700);
    transition: var(--transition-fast);
}

.kb-question:hover {
    color: var(--primary);
}

.kb-question-arrow {
    transition: transform 0.2s ease;
    font-size: 0.75rem;
    color: var(--gray-400);
}

.kb-question.open .kb-question-arrow {
    transform: rotate(180deg);
    color: var(--primary);
}

.kb-answer {
    display: none;
    padding: 0 1rem 1rem;
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.kb-answer.open {
    display: block;
}

.kb-answer strong {
    color: var(--gray-800);
}

.kb-answer ul, .kb-answer ol {
    padding-left: 1.25rem;
    margin: 0.5rem 0;
}

.kb-answer li {
    margin-bottom: 0.3rem;
}

.info-response {
    background: var(--info-bg);
    border: 1px solid var(--info);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    font-size: 0.9rem;
    color: var(--gray-700);
    line-height: 1.6;
}

.warning-banner {
    background: var(--danger-bg);
    border: 2px solid var(--danger);
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    margin: 1rem 0;
    font-size: 0.9rem;
}

.warning-banner h4 {
    color: var(--danger);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.warning-banner ul {
    padding-left: 1.25rem;
    margin: 0;
}

.warning-banner li {
    margin-bottom: 0.3rem;
    color: var(--gray-700);
}

.pregnancy-warning {
    background: var(--warning-bg);
    border: 1px solid var(--warning);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    margin: 1rem 0;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.app-footer {
    margin-left: var(--sidebar-width);
    border-top: 1px solid var(--gray-200);
    background: var(--white);
    text-align: center;
    padding: 2rem;
}

.footer-content p {
    margin-bottom: 0.3rem;
    color: var(--gray-400);
    font-size: 0.85rem;
}

.footer-content p:first-child {
    font-size: 0.95rem;
    color: var(--gray-600);
    font-weight: 600;
}

.footer-disclaimer {
    font-size: 0.8rem;
    color: var(--gray-400);
    max-width: 600px;
    margin: 0.5rem auto;
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--gray-400);
    margin-top: 0.75rem;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15,23,42,0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 1rem;
}

.modal-overlay.hidden {
    display: none;
}

.modal-content {
    background: var(--white);
    border-radius: 20px;
    padding: 2rem;
    max-width: 90vw;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.modal-icon {
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
    color: var(--warning);
}

.modal-content h2 {
    font-size: 1.35rem;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.modal-content p {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.modal-highlight {
    background: var(--danger-bg);
    padding: 0.75rem 1rem;
    border-radius: 10px;
    color: var(--danger);
    font-weight: 600;
    margin: 1rem 0;
    border: 1px solid rgba(220,38,38,0.15);
}

.modal-content .btn {
    margin-top: 0.75rem;
    width: 100%;
}

.loading {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-400);
    font-weight: 500;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.hape-warning-box {
    background: var(--danger-bg);
    border: 2px solid var(--danger);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    margin-top: 1rem;
}

.hape-warning-box h4 {
    color: var(--danger);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.hape-warning-box ul {
    padding-left: 1.25rem;
}

.hape-warning-box li {
    font-size: 0.9rem;
    color: var(--gray-700);
    margin-bottom: 0.3rem;
}

.hamburger-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    margin-right: 0.5rem;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.hamburger-btn:hover {
    background: var(--gray-100);
}

.hamburger-line {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--gray-600);
    border-radius: 2px;
    transition: var(--transition);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15,23,42,0.4);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 49;
}

.sidebar-overlay.active {
    display: block;
}

@media (max-width: 900px) {
    .hamburger-btn {
        display: flex;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 60;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
    }

    .app-footer {
        margin-left: 0;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-grid-3 {
        grid-template-columns: 1fr;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .top-nav {
        padding: 0 0.75rem;
    }

    .nav-subtitle {
        display: none;
    }

    .unit-label {
        display: none;
    }

    .nav-actions {
        gap: 0.5rem;
    }

    .section-header h1 {
        font-size: 1.35rem;
    }

    .gauge-container {
        width: 160px;
        height: 100px;
    }

    .gauge-bg {
        width: 160px;
        height: 80px;
    }

    .gauge-arc {
        width: 160px;
        height: 160px;
        border-width: 16px;
    }

    .gauge-needle {
        height: 70px;
    }

    .emergency-panel {
        width: 100%;
    }
}

@media (max-width: 600px) {
    .top-nav {
        height: 50px;
    }

    .app-layout {
        margin-top: 50px;
    }

    .nav-title {
        font-size: 1rem;
    }

    .section-header h1 {
        font-size: 1.2rem;
    }

    .main-content {
        padding: 0.75rem;
    }
}